Packing box, in particular for eggs



y 19, 1. 9 J. GLA SER 2,887,265

PACKING BOX, IN PARTICULAR FOR EGGS Filed Dec. 5, 1956 2 Sheets-Sheet 1 May 19, 1959 J. GLASER 2,887,265

I PACKING BOX, IN PARTICULAR FOR EGGS Filed Dec. 5, 1956 I 2 Sheets-Sheet 2 United States Patent PACKING BOX, IN PARTICULAR FOR EGGS Jules Glaser, Rusehlikon, Switzerland Application December 5, 1956, Serial No. 626,468

Claims priority, application Switzerland October 13, 1956 1 Claim. (Cl. 229-28) The present invention relates to a packing box for eggs, and other similarly shaped objects such as ampoules, incandescent electric bulbs, flashlight bulbs, etc., and more particularly to a blank for forming such boxes, said blank consisting of a sheet of cardboard, which is folded at lines running parallel to its longitudinal centre line to form a box-like prismatic structure open at both ends.

In such packing boxes, having means for holding the said objects, in their position within the box, for example tongues cut out of the walls and bent up into the inside of the box, it is important that no parts are eliminated by stamping or punching, since this would interfere with the making of incisions simultaneously with the printing of the blank.

Further it is important that the objects are held within the box in such a way that they do not touch the walls of the box or the bottoms of other boxes when stacked over each other.

The purpose of the present invention is to create a packing box for eggs and the like, which possesses all these features and does not require the application of adhesives.

In the accompanying drawing one embodiment of a packing box for eggs is illustrated according to the invention.

Fig. 1 showing an end view thereof,

Fig. 2 a top view,

Fig. 3 a side view, and

Fig. 4 a top view of a portion of the blank or sheet of cardboard used for making the box, spread out in a plane.

The packing box shown in the drawing consists of a single blank of cardboard wifl1 scratched groovings 1 to 3 running in the longitudinal direction to form folding edges. The folding edges are situated symmetrically at both sides of the longitudinal centre line of the sheet of cardboard.

Uniformly spaced along this centre line and symmetrically to it and also to lines standing at right angles to said centre line, a number of incisions are arranged. A first pair of incisions 4 and 5 lies in sides of a rectangle running parallel to the longitudinal centre line of the sheet of cardboard and the incisions on the two other sides of the said rectangle are interrupted. Within this rectangle, two arcuate incisions 6 and 7 are arranged at both sides of and symmetrically to the lines running at right angles to the longitudinal centre line of the sheet of cardboard, and within the incisions 6 and 7 an incision 8 is provided which produces a free tongue 9 directed towards the longitudinal centre line of the blank. Arcuate incisions 10 at the edge of the sheet of cardboard produce openings, into each of which a tongue 9 is inserted.

lncisions 11 spaced from each other between the scratched groovings 2 and 3, and incisions 12 situated opposite to them with respect to the longitudinal centre line of the sheet of cardboard, produce openings and lugs 13, respectively, said lugs to be inserted into these openings.

The described blank is laid over a row of eggs 14 in such manner that the longitudinal centre line of the sheet lies on the middle of the eggs, Whose long axes run transverse to this longitudinal centre line and parallel to each other. When the portions of the blank containing the incisions 4 to 8 is folded down laterally, the ends of the eggs 14 come between the arcuate incisions 6 and 7, whereby the tongue 9 is pushed outwards.

By inserting the lugs 13 into the openings formed by the incisions 11, the middle portion of the blank is closed round the eggs 14 between the two scratched groovings 1. The next-following portions of the blank between the scratched groovings 2 and 3, are folded back obliquely outwards and upwards, and finally the edge portions 3' and 3", respectively, beyond the scratched groovings 3 are folded inwards onto the preceding parts in order to form a prismatic structure open at each end.

The tongues 9 pressed outwards by the ends of the eggs 14 are now, at the bottom of the box, pushed into the openings formed by the incisions 10, whereby the box receives its final shape.

As appearing from Fig. 1, portions of the box project outwards from the eggs both above and below and also laterally, so that the eggs in boxes stacked beside each other or over each other never come into contact. In the same box eggs of various sizes are held securely, since each egg is held independent from the others, the holding portions of the box automatically suiting themselves to the size of the eggs.

The box consists of a blank without any portions completely stamped out, and needs neither clips nor parts glued together for closing it.

What I claim as my invention is:

A blank for forming a packing box, particularly for eggs, consisting of a rectangular sheet of cardboard folded at lines running parallel to its longitudinal centre line to form a prismatic structure open at both ends; first incisions on the sheet of cardboard symmetrical to its longitudinal centre line and to lines standing at right angles thereto and distributed at uniform distances apart along it; said incisions forming rectangles having two sides parallel to the longitudinal centre line of the sheet of cardboard and two sides which are interrupted; two arcuate incisions within the rectangles at both sides of the centre lines of the rectangles standing at right angles to said longitudinal centre line; second arcuate incisions centered within the rectangles shaped and arranged to form free tongues directed towards the centre line of the blank; arcuate incisions adjacent the edges of the sheet of cardboard for receiving the tongues; third incisions distributed in spaced relation along the sheet of cardboard; said third incisions forming openings at one side; and fourth incisions forming lugs insertahle into these openings at the other side.

References Cited in the file of this patent UNITED STATES PATENTS 1,940,292 Bueschel Dec. 19, 1933 FOREIGN PATENTS 324,915 Great Britain Feb. 5, 1930 

